Pleurisy root has been known to help people with respiratory infections, and reduce inflammation and help with expectoration. To the Plains Indians, this herb was highly valued for lung ailments.
Today, a tea made from the root is used for bronchitis, pneumonia, asthma, influenza, dry cough and as the name implies, for pleurisy.
Some have applied the milky juice from the plant to warts help soften and heal them.
The parts used are the root and juice.
(Disclaimer, please contact your doctor first before trying to treat anything for your health. The things mentioned in this and my other herb blogs have not been tested by the food and drug administration, to my understanding.)